Process of treating metals



Mrs *r'rns A'rnNr ai union.

PROCESS OF TREATING METALS.

SPECIFICATION forming part of Letters Patent No. 547,361, dated October1, 189 5.

Application filed August 19, 1895. s ial No. 559,787 (No specimens.)

To all whom it may concern:

Be it known that I, WILLIAM J. SAGER, a citizen of the United States,residing at Warren, in the county of Warren and State of Pennsylvania,have invented certain new and useful Improvements in Processes ofTreating Metals, of which the following is a specification.

My invention is an improved composition of matter and a method oftreatment for the working of steel to improve its quality anddurability, and thus adding materially to its wear.

In carrying out my invention I first prepare my composition inpulverized form, Well mixed, using the ingredients hereinafter describedin substantially the proportions stated, and into this compound I dip orirnmerse the piece being forged, then heat the piece to a propertemperature, and hammer the same, and repeat this operation as often asmay be necessary. By this operation and subjecting the piece beingforged to the repeated action of the compound great durability isimparted to the article forged. I then complete the method by taking thepiece thus forged and temper and harden it by subjecting it (after firstheating the article or piece to a cherry-red) to a bath composed of thesame ingredients as the compound described,

but in different proportions and dissolved in Water, the solutionstanding, preferably, about forty hours before being used. I reduce thearticle to the desired temper in the Wellknown manner.

The compound is made up of the following ingredients: prussiate ofpotash, saltpeter, blue vitriol, sal-ammoniac, concentrated lye, salt,and borate of iron.

The proportions used for forging are one part of the prussiate ofpotash, one and onehalf of saltpeter, two parts of blue vitriol, twoparts of the sal-ammoniac, one part of concentrated lye, three parts ofsalt, and one part of borate of iron.

What I claim is 1. The herein described com position of matterconsisting of prussiate of potash; saltpetel; blue vitriol; salammoniac; concentrated lye; salt and borate of iron in substantially theproportions described.

2. The herein described method consisting in alternately dippingorimmersing the metal to be forged in a compound of prussiate of potash;saltpeter; blue vitriol; salammoniac; concentrated lye; salt and borateof iron and heating the same, then heating the forged piece to a cherryred and finally subjecting it to a tempering bath substantially asdescribed.

In testimony whereof I affix in presence of two Witnesses.

WILLIAM J. SAGER.

my signature Witnesses:

E. S. MAoK, F. T. SAGER.

